Back Matter, at Penn’s Architectural Archives until Friday, March 3, traces the development and manifold permutations of the provocative ideas put forth in Robert Venturi’s Complexity and Contradiction in Architecture, marking the 50th anniversary of its publication. The exhibition contributes a broader perspective of the catalytic role that teaching played in defining his artistic voice. Works on view include manuscript drafts and working documents related to this publication, along with original sketches and never-before-seen period photographs of the architect’s early built works, including the iconic Vanna Venturi House (at left). Of particular note are materials related to Venturi’s Theories of Architecture course, which he taught from 1961-1965 at Penn.